﻿using System.Collections;
using System.Collections.Generic;
using System.Diagnostics.Contracts;

namespace Library.Linq
{
    public interface IConcat<T>
    {
        [Pure]
        IEnumerable<T> Concat(T item);

        [Pure]
        IEnumerable<T> Concat(IEnumerable<T> enumerable);
    }
}
